Method For Preparing Admixture Blends For Construction Material On Site And A Micro-Plant For Implementing The Method

Abstract

The present invention discloses a method for preparing admixture blends for construction material on site, which comprises the steps of: a) selecting at least one kind of raw material for formulating out an admixture blend and providing a water supply on site; b) controlling the usage amount of said at least one kind of raw material and water on site according to construction material performance requirement; c) mixing the predetermined amount of raw materials and water on site; and d) directly supplying the obtained admixture blend to a manufacturing apparatus for construction material on a construction material manufacturing site, wherein the whole process of preparation is completed with the online control from a computer. The present invention also discloses a mobile micro-plant for implementing the method.

1 . A method for preparing admixture blends for construction material on site, including the steps of:
 a) selecting at least one kind of raw material for formulating out an admixture blend and providing a water supply on site;   b) controlling the usage amount of said at least one kind of raw material and water on site according to construction material performance requirement;   c) mixing the predetermined amount of raw materials and water on site; and   d) directly supplying the obtained admixture blend to a manufacturing apparatus for construction material on a construction material manufacturing site,   
       wherein the whole process of preparation is completed with the online control from a computer. 
     
     
         2 . The method as claimed in  claim 1 , wherein the whole process of preparation is carried out in a closed system with respect to the construction material manufacturing on site. 
     
     
         3 . The method as claimed in  claim 1 , wherein said at least one kind of raw material is an admixture of high solid content. 
     
     
         4 . The method as claimed in  claim 1 , wherein said at least one kind of raw material is selected from the group consisting of water reducing admixture, slump retainer, set retarder, air entraining admixture, air defoamer, shrinkage-reducing agent and hardening accelerator. 
     
     
         5 . The method as claimed in  claim 1 , wherein said step b) comprises metering said at least one kind of raw material and water by one or more flowmeters. 
     
     
         6 . The method as claimed in  claim 1 , wherein said step c) comprises mixing with a stirrer controlled by a computer-based controller. 
     
     
         7 . The method as claimed in  claim 1 , wherein said construction material is concrete, cement or mortar. 
     
     
         8 . A mobile micro-plant for implementing the method as claimed in  claim 1 , comprising: an admixture raw material supply module including one or more raw material containers filled with admixture raw materials, a water line for supplying water, a pumping module including one or more pumps for pumping raw material flows from said raw material containers, a valve module including one or more valves for controlling raw material flows and water flow, a metering module including one or more flowmeters for metering raw material flows and water flow, a mixing module for mixing the metered raw materials and water, and a computer-based controller for controlling the operation of said pumping module, said valve module, said metering module and said mixing module.